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Molten rock below the Earth's surface is called ____.
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basalt
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Amber, coral, pearl, and shell are ____ (contain carbon).
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coal
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Dinosaur fossils are found in some ____ rocks.
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magma
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Igneous ____ (extrusive) rocks form from cooled lava.
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marble
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A very light, porous, volcanic igneous rock is ____.
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organic
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Over millions of years, pressure converted peat into ____.
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pumice
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A dark gray, fine-grained, volcanic igneous rock is ____.
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sedimentary
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A metamorphic rock derived from limestone is ____.
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volcanic
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